Professional Red 2" VoltmeterPerimeter-lighted black dial with stylish red and white graphics, black aluminum bezel, tear- drop white pointer, and flat glass lens.A voltmeter indicates the battery voltage and the general condition of the battery charging system. The meter requires no warm-up and indicates voltage changes instantly.2"- Hole Size: 2.0625" (53mm)Specifications:10 to 16VDCFlat Glass Anti-fog, Scratch Resistant LensBlack Aluminum BezelWhite Numeric Values with Red Increment IndicatorsWhite Tear Drop PointerFactory P/N VP7042